采用双螺杆挤出机制备了聚丁二酸丁二醇酯/水滑石（PBS／HT）纳米复合材料，并详细研究了复合材料的形貌及分散、结晶和熔融行为，晶体结构和球晶形态以及力学性能。采用SEM、TEM、DSC、XRD、POM和DMA进行了表征测试，结果表明层状水滑石纳米粒子较好地分散在PBS基体中，加入HT具有明显的异相成核能力，显著地提高了PB$的结晶温度。偏光显微镜结果显示，随着HT加入量的增加PBS球晶密度增加，球晶尺寸细化。HT添加量为1％（质量分数）时复合材料的拉伸强度增大，随着HT加入量增加断裂伸长率下降而弹性模量增加。动态机械测试表明复合材料的储能模量显著提高。
Biodegradable poly(butylene succinate) (PBS) and hydrotalcite (HT) nanocomposltes were prepared via melt blending in a twin-screw extruder. The microstructure, crystallization, spherulitic morphology and mechanical properties of PBS and its nanocomposite were studied by SEM, TEM, DSC, XRD, POM and DMA in detail. HT nanoparticles were found to be well distributed at the nanometer level. The addition of HT was found to enhance the crystallization of PBS, due to the heterogeneous nucleation effect. POM observation shows that the nucleation density increases and the spherulite size of PBS decrease distinctly with the presence of HT nanopartieles. The tensile strength of the PBS/HT nanocomposites increased when the content of HT nanoparticles was 1%, and the elongation at break of the nanocomposites decreased whereas the modulus of elasticity increased with increasing HT loading. DMA measurement indicated that a significant enhancement of the modulus of the nanocomposites was achieved.
参考文献
| [1] | Ray S S;Okamoto M .Polymer/layered silicate nanoeom- posites a review from preparation to processing[J].Progress in Polymer Science,2003,28:1539-1641. |
| [2] | Ray SS.;Okamoto K.;Okamoto M. .Structure-property relationship in biodegradable poly(butylene succinate)/layered silicate nanocomposites[J].Macromolecules,2003(7):2355-2367. |
| [3] | Ray SS;Okamoto K;Okamoto M .Structure and properties of nanocomposites based on poly(butylene succinate) and organically modified montmorillonite[J].Journal of Applied Polymer Science,2006(1):777-785. |
| [4] | 刘跃军,高鑫,刘亦武,范淑红.多元LDHs/EVA纳米复合材料的制备及性能研究[J].功能材料,2012(15):2009-2013. |
| [5] | Sorrentino A;Gorrasi G;Tortora M et al.Incorporation of Mg-A1 hydrotalcite into a biodegradable poly(capro- lactone)by high energy ball milling[J].Polymer,2005,46:1601-1608. |
| [6] | Yang, Z;Peng, HD;Wang, WZ;Liu, TX .Crystallization Behavior of Poly(epsilon-caprolactone)/Layered Double Hydroxide Nanocomposites[J].Journal of Applied Polymer Science,2010(5):2658-2667. |
| [7] | Hsu SF;Wu TM;Liao CS .Isothermal crystallization kinetics of poly(3-hydroxybutyrate)/layered double hydroxide nanocomposites[J].Journal of Polymer Science, Part B. Polymer Physics,2006(23):3337-3347. |
| [8] | Zubitur M;Mugica A;Areizaga J et al.Morphology and thermal properties relationship in poly(p-dioxanone)/lay- ered double hydroxides nanoeomposites[J].Colloid Polym Sei,2010,288:809-818. |
| [9] | Pan PJ;Zhu B;Dong T;Inoue Y .Poly(L-Lactide)/Layered Double Hydroxides Nanocomposites: Preparation and Crystallization Behavior[J].Journal of Polymer Science, Part B. Polymer Physics,2008(20):2222-2233. |
| [10] | Synthesis and characterization of biodegradable poly(L-lactide)/layered double hydroxide nanocomposites[J].Composites science and technology,2010(1):110. |
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